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Finding the Fourth Proportional to 10,369.99, 15,554.99 and 2,578.80

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Solution

The fourth proportional to 10,369.99, 15,554.99 and 2,578.80 is: 3,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.99 : 15,554.99 = 2,578.80 : x
  2. Step 2: Convert to fraction form
    10,369.99/15,554.99 = 2,578.80/x
  3. Step 3: Cross multiply
    10,369.99x = 15,554.99 × 2,578.80
  4. Step 4: Simplify right side
    10,369.99x = 40,113,208.21
  5. Step 5: Solve for x
    x = 40,113,208.21/10,369.99
  6. Step 6: Final answer
    x = 3,868.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.